Before the recent update that allows you to use dyes on signs to change the text colors, you used to be able to use the § symbol to change sign colors. You can still do this, but now all of the colors are extremely dark. I've attached a photo showing what I'm talking about. The sign on the left was placed before the recent update, and the sign on the right was just placed today. They are the same exact text, both using "§f" to make the texts white. Hopefully this is an actual bug and not a feature, because it's basically made signs useless with the way I use them.